Home
Gemstones


Andradite and Common Opal Physical Properties


Common Opal and Andradite Physical Properties


Physical Properties

Tenacity
Brittle   
Not Available   

Solubility
Not Available   
Not Available   

Durability
Not Available   
Not Available   

Specific Gravity
3.70-4.10   
1.98-2.50   

Fracture
Conchoidal, Uneven, Conchoidal, Brittle, ConchoidalArthur Thomas, Gemstones (2009)   
Conchoidal, Conchoidal, Gemstones of the world (2001)   

Cleavage
none   
Not Available   

Mohs Hardness
6.5-7   
5.5-6.5   

Chemical Composition
Ca 3Fe 2(SiO 4) 3Arthur Thomas , Gemstones (2009)   
SiO 2 · nH 2OWalter Schumann , Gemstones of the world (2001)   

Optical Properties >>
<< Astrology

Andradite and Common Opal Chemical Formula

While comparing Andradite and Common Opal physical properties, the important data you should know is its chemical composition. Since chemical formula defines the molecular structure of the crystal, most of the physical properties like color, tenacity, solubility are governed by Andradite and Common Opal chemical formula.

Compare Green Gemstones

Andradite and Common Opal Specific Gravity

Another important criteria for qualitative analysis of gemstones is Andradite and Common Opal Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Andradite and Common Opal Optical Properties during the identification of gemstone. Specific gravity of Andradite is 1.98-2.50 whereas that of Common Opal is 1.98-2.50.

Green Gemstones

Green Gemstones


Compare Green Gemstones